Scientists have created thin polymer sheets that expand and contract when in contact with water

Our skin is an endlessly complex organ. Luckily, in this one-minute video, our Ask Smithsonian host Eric Schulze is here to explain exactly what happens after you get a scrape.

A blue-throated side-blotched lizard defending his territory against an orange-throated side-blotched lizard

More on Kathleen Turner and her show at Arena Stage: http://j.mp/T0IkkZ Before taking the stage in "Red Hot Patriot: The Kick-Ass Wit of Molly Ivins," Academy Award nominee Kathleen Turner discusses the woman who inspired the show.

The Black Death of 1348 was a devastating event, wiping out half the population of Britain. And in churches like this one, drawings on the wall provide a haunting visual record of the scale of the tragedy.

Smithsonian Secretary Wayne Clough offers personal insights on the realities of climate change and the best ways for society to adapt

Every Veterans Day, Jeremy Redmon thinks about his father, Donald Lee Redmon — an Air Force veteran who survived more than 300 combat missions over Southeast Asia, but who took his own life when Jeremy was 14. This year, Redmon traveled back to Hanoi with a group of former prisoners of war, many of whom had flown the same missions as his dad. Jeremy asked these veterans questions he was never able to ask his own father, about how they’d healed from the war and lived rewarding lives thereafter. In this episode, guest host Jennie Rothenberg Gritz speaks with Redmon about the complexities of the Vietnam War, as well as his own experiences as a reporter in Iraq. Then, Vietnamese American author Mai Elliott discusses her family’s experiences in North and South Vietnam, and how her feelings about the conflict changed throughout the 1960s. Read Jeremy Redmon’s Smithsonian story “Fifty Years After Their Release, Former Vietnam POWs Journey Back to Hanoi” here (https://www.smithsonianmag.com/history/fifty-years-finding-freedom-vietnam-vets-healing-journey-hanoi-180983052/) . Order Mai Elliott’s book The Sacred Willow: Four Generations in the Life of a Vietnamese Family here (https://www.amazon.com/Sacred-Willow-Generations-Vietnamese-Family-ebook/dp/B074JBTTZ3?ref_=ast_author_mpb) . Find prior episodes of our show here (https://www.smithsonianmag.com/podcast/) . There’s More to That is a production of Smithsonian magazine and PRX Productions. From the magazine, our team is Jennie Rothenberg Gritz, Chris Klimek, Debra Rosenberg and Brian Wolly. From PRX, our team is Jessica Miller, Adriana Rosas Rivera, Genevieve Sponsler, Terence Bernardo, and Edwin Ochoa. The Executive Producer of PRX Productions is Jocelyn Gonzales. Fact-checking by Stephanie Abramson. Episode artwork by Emily Lankiewicz. Music by APM Music.

Marine biologist Nancy Knowlton discusses a research trip to the Smithsonian Tropical Research Institute, in Panama, where she and her collaborators collected data on coral reef populations. Reef sustainability is closely tied to coral reproduction. Then director of the Center for Marine Biodiversity and Conservation at the Scripps Institution of Oceanography, Knowlton, who has since been hired to lead the Smithsonian's Ocean Initiative, has reservations about the long-term future of corals

In 1905, New York City hosted a grand procession for the last living soldier of a war that ended 90 years earlier

A mata mata turtle can go 15 minutes between breaths--it's another one of the Smithsonian's National Zoo's many unique animals. Join the Zoo's experts for an inside look at some of its 2,000 rare and extraordinary creatures.

You might think twice about picking that chip off the carpet and putting it into your mouth.

Selected by William Coupon for our special issue, this up-and-coming photographer discusses her work

This video from the Illustris project simulates 13 billion years of the universe in just two minutes

Smithsonian curator Larry Bird shows off convention artifacts and other campaign memorabilia from the collection of the National Museum of American History (Smithsonian.com). Read more at http://www.smithsonianmag.com/history-archaeology/Inauguration-2009.html

Fallow deer are the first species outside of primates to be able to make auditory discernment of social dominance

The first plane to fly nonstop from New York to Paris will reside on the ground level of the National Air and Space Museum for the next five months as it undergoes preservation (Courtesy of the National Air and Space Museum)

The Smithsonian National Zoos Snore & Roar program gives visitors a behind the scenes look (Video and Reporting by Megan Gambino and Ryan Reese). Read more at http://blogs.smithsonianmag.com/aroundthemall/2008/09/sleep-over-party-at-the-zoo/

Hear audio of mouse lemurs and pied babblers (Note: Lemur calls have been slowed down to one-tenth their speed so that scientists can analyze their differences.)

Our giant of a host, Eric Schulze, explains why size mattered in prehistory.

A. Aubrey Bodine's daughter reflects on her father's trained eye toward capturing the people of Charm City. Read more at: https://www.smithsonianmag.com/travel/photographing-baltimores-working-class-9338157/

Re-enactors relive the Battle of Baltimore and celebrate the flag that inspired our national anthem (Ryan R. Reed). Read more at: https://www.smithsonianmag.com/history/star-spangled-banner-back-on-display-83229098/

Credit: Herbert Hoover Presidential Library-Museum

Watch how a mother rhesus makes funny faces to her infant child to grab its attention

Credit: Carlos Jaramillo, German Bayona and Edward Duarte, using Gplates and VideoPad by NCHsoftware

Yacouba Sawadogo, a farmer from Burkina Faso, has become a pioneer in the fight against desertification – succeeding where many international agencies have failed

http://j.mp/196BLpQ From her salon in Maryland, Camille Reed sees more black women embracing natural hair

After arriving at the zoo obese, Nikki the Bear was put on a strict diet by the zoo nutritionists with great results (Video by: Ryan R. Reed). Read more at: https://www.smithsonianmag.com/smithsonian-institution/nikki-the-bear-lost-110-pounds-on-the-national-zoo-diet-46145236/

Historically feared by humans, brown bears were once aggressively hunted in the contiguous U.S. Because of this, 95% of these majestic creatures live in Alaska.

The city famous for blues and barbecue is a little “ragged around the edges” according to tour guide Tad Pierson, who drives tourists around in his pink 1955 Cadillac by Lucian Perkins

Are you the kind of person who needs to know what keeps satellites from plummeting to the Earth in a big, fiery ball? Then you need to watch this one-minute video, where Ask Smithsonian host Eric Schulze gives us the lowdown on what-in-the-name-of-science makes those satellites stay up.

The naked stone is on exhibit at the Natural History museum through next spring

Can quicksand really swallow you up, or does that just happen in the movies? Host Eric Schulze dives in to separate science fact from science fiction."

Aziz Ansari | Smithsonian Magazine’s 2016 American Ingenuity Award Winner for Performing Arts The actor, comedian and author is being honored for his starring role as Dev Shah in “Master of None,” the Netflix series that he created with Alan Yang. Like the character he plays, Ansari is the son of Indian immigrant parents, and his smart, surprising take on life, love, technology and cultural identity in the United States has helped make the show “the year’s best comedy straight out of the gate,” as the New York Times put it. Among Ansari’s other accomplishments are his unforgettable portrayal of the loopy Tom Haverford on NBC’s “Parks and Recreation,” his best-selling book about dating in the internet age, Modern Romance (co-authored with Eric Klinenberg), and his blockbuster stand-up act that sold out Madison Square Garden. Read more about Ansari’s work: http://smithmag.co/jvdAaL | #IngenuityAwards And more about the American Ingenuity Awards: http://smithmag.co/77xPqy

Credit: Herbert Hoover Presidential Library-Museum

The cheetah cubs will be named after the fastest male and female American Olympic athletes in the 100-meter dash at the London Olympics.

The Director of the Smithsonian's Hirshhorn Museum predicts what the museum's collections will hold in the next 40 years Read more at http://www.smithsonianmag.com/specialsections/40th-anniversary/Arts-Bold-New-Direction.html

The Hirshhorn Museum and Sculpture Garden is renowned for its striking architecture and impressive collection of contemporary art. Whether you're an art enthusiast, a history buff, or simply curious about that concrete donut on the National Mall, learn more about its Brutalist background in this new episode of National Treasure. --------- To find out more about the Hirshhorn Museum and Sculpture Garden, read below: https://www.smithsonianmag.com/smithsonian-institution/hirshhorn-museum-building-went-from-iconoclast-icon-180984914/ Digital Editorial Director: Brian Wolly Director of Programming: Nicki Marko Supervising Producer & Scriptwriter: Michelle Mehrtens Producer & Editor: Sierra Theobald Motion Designer: Ricardo Jaimes

Sally, a Labrador retriever, sniffs sock samples and then pauses on the sample worn by a child with malaria. (Durham University/Medical Detection Dogs/London School of Hygiene & Tropical Medicine)

Recently digitized footage shows the Marine assault on Iwo Jima during World War II, including prepping equipment, arriving on the island and raising the flag. (U.S. Marine Corps History Division and Moving Image Research Collections, University of South Carolina)

Read more about Haleakala: http://j.mp/ufv44s The Hawaiian volcano, with its unique vegetation and meditative winds, has a spiritual connection to the native population

Explore the history of the Aztecs, their incredible achievements in art, architecture, and warfare, as well as the factors that led to their decline. --- For more videos from Smithsonian Magazine: https://www.smithsonianmag.com/videos/ Digital Editorial Director: Brian Wolly Supervising Producer & Scriptwriter: Michelle Mehrtens Producer: Nicki Marko Video Editor: Sierra Theobald

David Silverman has collected more than 800 pinball machines to preserve their history and create a national pinball museum.

What fueled the frenzy that sent so many to their deaths in colonial America? And how did Americans reckon with the aftermath of the panic? --- For more videos from Smithsonian Magazine: https://www.smithsonianmag.com/videos/ Digital Editorial Director: Brian Wolly Supervising Producer & Scriptwriter: Michelle Mehrtens Video Editor: Sierra Theobald

Kip Thorne, Rainer Weiss, Barry Barish and Ronald Drever | Smithsonian Magazine’s 2016 American Ingenuity Award Winners for Physical Sciences In February, physicists announced the first-ever detection of gravitational waves—a phenomenon Albert Einstein predicted back in 1915. The faint reverberation, from two merging black holes 1.3 billion light-years ago, registered in the two giant detectors that make up the Laser Interferometer Gravitational-Wave Observatory, or LIGO. It took decades for LIGO’s founders—Weiss, of MIT, and Thorne and Drever, of Cal Tech—to amass the necessary funding and brainpower. Barish, a particle physicist at CalTech, became LIGO’s director and expanded its work to include more than 1,000 researchers worldwide. Their revolutionary achievement opens the way for a new understanding of the universe, perhaps even a glimpse of the Big Bang. Read more about their work: http://smithmag.co/FZBFeP | #IngenuityAwards And more about the American Ingenuity Awards: http://smithmag.co/77xPqy

Travel to Oregon, Minnesota, North Dakota and Rhode Island to see beautiful autumn foliage and much more. --- For more videos from Smithsonian Magazine: https://www.smithsonianmag.com/videos/ Digital Editorial Director: Brian Wolly Supervising Producer & Scriptwriter: Michelle Mehrtens Video Editor: Sierra Theobald